Jacking device of jacking station in spiral pipe jacking construction

Abstract

The invention provides a jacking station jacking device in spiral pipe jacking construction. One end of a main body abuts against a pre-constructed jacking pipe through a sleeve, the other end of the main body abuts against a to-be-constructed jacking pipe through a rotating disc, and the sleeve is in threaded assembly with the outer wall of the main body through an internal thread; a check ring corresponding to the end face of the jacking pipe is arranged at the end of the sleeve, a plurality of driving mechanisms are evenly distributed on the side, corresponding to the main body, of the check ring in the circumferential direction, and the driving mechanisms are correspondingly assembled on the inner wall of the main body after stretching into the main body to generate circumferential driving force with the main body, so that the sleeve rotates in the circumferential direction relative to the main body and drives the construction jacking pipe in the axial direction. When the driving motor is started, power is transmitted to the driving gear through the transmission rod, the driving gear rotates around the axis of the transmission rod, and the driving gear is meshed with the inner wall of the main body to form a planetary gear structure, so that the driving gear can generate relative action with the main body, and the relative action force drives the sleeve to select; and rotating power is converted into linear motion by utilizing a thread structure, so that a relay jacking function is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe jacking construction, and in particular relates to a spiral pipe jacking construction relay room jacking device. Background Art

[0002] The relay room jacking construction method is an underground pipeline construction method developed after the shield construction. It does not require excavation of the surface layer and can cross roads, railways, rivers, ground buildings, underground structures and various underground pipelines. In the process of long-distance jacking, when the jacking resistance exceeds the allowable total jacking force and the jacking distance cannot be reached at one time, a relay room must be set up for segmented relay jacking. Usually, the relay room consists of a front shell, a jack and a rear shell. The front shell is connected to the front pipe, and the rear shell is connected to the rear pipe. The front and rear shells are connected in a socket-type connection, and the two are sealed by a rubber water stop to prevent water, soil and slurry outside the pipeline from flowing back into the pipeline. However, it is worth noting that in the underground construction process, traditional equipment requires additional hydraulic supply equipment, which is troublesome to disassemble and assemble, occupies a large space, and may cause leakage during long-term use.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and the present invention provides a spiral jacking device for the intermediate room of jacking construction.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A spiral jacking device for a relay room of a jacking pipe construction, comprising:

[0007] A main body, one end of which abuts against a previously constructed jacking pipe through a sleeve, and the other end of which abuts against a currently constructed jacking pipe through a turntable, and the sleeve is threadedly assembled with an outer wall of the main body through an internal thread;

[0008] A driving mechanism, wherein a retaining ring corresponding to the end face of the jacking pipe is provided at the end of the sleeve, and a plurality of driving mechanisms are evenly distributed along the circumferential direction on one side of the retaining ring corresponding to the main body. After the driving mechanism extends into the main body, it is correspondingly assembled on the inner wall of the main body to generate a circumferential driving force with the main body, so that the sleeve rotates circumferentially about the main body and drives the jacking pipe in the axial direction.

[0009] Preferably, the driving mechanism includes a driving motor, a transmission rod and a driving gear. The driving motor is fixed on the retaining ring, and its main shaft extends in a direction parallel to the axis of the main body and is connected to the driving gear through the transmission rod. A gear sleeve is provided inside the main body, which engages with the driving gear through internal teeth.

[0010] Preferably, the main body corresponds to a threaded end of one end of the sleeve, the threaded end and the other end are transitioned by a step with an increased outer diameter, and a buffer strip corresponding to the step is provided at the end of the sleeve.

[0011] Preferably, a rotating member is provided between the turntable and the end surface of the main body, and the rotating member is a thrust bearing.

[0012] Preferably, a ratchet ring is provided on the turntable, the ratchet ring is concentrically distributed with the main body, and a wedge block extending toward the ratchet ring is provided on the main body.

[0013] Preferably, the ratchet passes through the end face of the main body via a guide column, one end of the guide column extending into the main body is correspondingly connected to an adjusting nut, and a return spring is provided between the end face of the main body and the wedge block.

[0014] Preferably, the main body is provided with a stepped hole corresponding to the guide column, and the return spring is assembled in the stepped hole.

[0015] Preferably, the driving motor is provided with a motor support arm corresponding to the retaining ring, and the motor support arm is fastened to the retaining ring by rivets.

[0016] Beneficial effect: When the drive motor is started, the power is transmitted to the drive gear through the transmission rod. The drive gear rotates around the axis of the transmission rod. The drive gear meshes with the inner wall of the main body to form a planetary gear structure, so that it can produce a relative effect with the main body. The relative force drives the sleeve to select, so as to utilize the threaded structure to convert the rotational power into linear motion, thereby realizing the function of relay jacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0018] Figure 1 It is a structural schematic diagram of the jacking device in the specific embodiment provided by the present invention;

[0019] Figure 2 for Figure 1 Middle AA section view;

[0020] Figure 3 for Figure 1 Middle BB section view;

[0021] Figure 4 It is a schematic diagram of the use state of the jacking device of the present invention;

[0022] Figure 5 for Figure 1The partial enlarged picture of point Ⅰ in the middle;

[0023] Figure 6 for Figure 1 Top view of center II.

[0024] In the figure: 1-sleeve; 11-retaining ring; 12-internal thread; 13-buffer strip; 2-main body; 21-rear housing; 22-threaded end; 23-gear sleeve; 24-thrust bearing; 3-driving mechanism; 31-transmission rod; 32-driving motor; 33-rivet; 34-motor support arm; 35-driving gear; 41-ratchet ring; 42-wedge block; 43-reset spring; 44-adjusting nut; 45-guide column. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0026] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0028] like Figure 1-6As shown, a spiral jacking device for a relay room for jacking construction includes a main body 2 and a driving mechanism 3. The overall structure of the main body 2 is basically the same as that of the conventional relay room main body 2, specifically a cylindrical rotating body corresponding to the jacking pipe, one end of the main body 2 abuts against the previously constructed jacking pipe through a sleeve 1, and the other end abuts against the next jacking pipe through a turntable, so as to perform jacking transition on the front and rear parts of the jacking pipe, the sleeve 1 is threadedly assembled with the outer wall of the main body 2 through an internal thread 12, the outer diameter of the sleeve 1 is adapted to the outer diameter of the jacking pipe, and a retaining ring 11 extending inwardly and corresponding to the end face of the jacking pipe is provided at the end of the sleeve 1, the width of the retaining ring 11 is greater than the wall thickness of the jacking pipe, so as to provide for the installation of the driving mechanism 3, the driving mechanism 3 After installation, it extends into the main body 2 in a direction parallel to the axis of the main body 2 and is close to the inside of the main body 2. Specifically, the retaining ring 11 is located on one side of the main body 2 and a driving mechanism 3 is arranged. There are multiple driving mechanisms 3, and the retaining rings 11 of the multiple driving mechanisms 3 are evenly distributed circumferentially. The driving mechanisms 3 are preferably 4-6. After the driving mechanism 3 extends into the main body 2, it is correspondingly assembled on the inner wall of the main body 2, so that it can generate a circumferential force with the main body 2, so that the driving mechanism 3 can move circumferentially around the inner wall of the main body 2 under the drive of the reaction force, thereby making the sleeve 1 rotate circumferentially about the main body 2, and under the action of the threaded structure of the sleeve 1 and the outer wall of the main body 2, the sleeve 1 is driven axially to construct the jacking pipe.

[0029] In an optional embodiment, the driving mechanism 3 includes a driving motor 32, a transmission rod 31 and a driving gear 35. The driving motors 32 of multiple driving mechanisms 3 are driven by the same controller, so as to synchronously drive and improve the jacking force, and utilize the synchronization of multiple driving mechanisms 3 to make the force uniform, thereby ensuring the stability of the advancement process between relays.

[0030] In this embodiment, the driving motor 32 is fixed on the retaining ring 11. Specifically, the driving motor 32 is provided with a motor support arm 34 corresponding to the retaining ring 11. The motor support arm 34 can be a rib plate. The end of the motor support arm 34 is provided with a bend corresponding to the retaining ring 11, and the bend is fastened to the retaining ring 11 by rivets 33 or anchor bolts.

[0031] After the driving motor 32 is fixed to the retaining ring 11, its main shaft extends in a direction parallel to the axis of the main body 2. The end of the main shaft is fixed to the transmission rod 31 by a coupling or welding. One end of the transmission rod 31 extending into the main body 2 is connected to the driving gear 35. The main body 2 is provided with a gear sleeve 23 that meshes with the driving gear 35 through internal teeth. The driving gear 35 meshes with the inner gear sleeve 23 of the main body 2, and the rack is fixed to the main body 2. The circumferential length of the gear sleeve 23 is greater than each jacking stroke of the relay, so that it can slide axially along the gear sleeve 23 during the driving process.

[0032] When the drive motor 32 is started, its power is seamlessly transmitted to the drive gear 35 via the transmission rod 31, causing it to rotate smoothly around its own axis. This rotation effect is converted into the rotational power of the sleeve 1 through the precise engagement between the drive gear 35 and the inner gear sleeve 23 of the main body 2, and further converted into precise linear displacement. During this conversion process, the sleeve 1 performs a forward propulsion action, realizing the relay jacking function of high-precision linear propulsion.

[0033] In an optional embodiment, one end of the main body 2 corresponding to the sleeve 1 is a threaded end 22, and the outer diameter of the part of the main body 2 corresponding to the threaded end 22 is smaller than that of the other end of the main body 2. The threaded end 22 and the other end of the main body 2 are transitioned by a step, and the step is adapted to the sleeve 1, so as to ensure that the outside of the main body 2 maintains a flat surface, thereby ensuring the smooth advancement of the relay room in the formation. A buffer strip 13 corresponding to the step is provided at the end of the sleeve 1. The buffer strip 13 is a ring-shaped buffer rubber, and the buffer rubber is fastened to the lower end of the sleeve 1 by screws, so as to avoid collision with the main body 2. In this embodiment, the inner side of the buffer rubber contacts the outer wall of the smaller end of the main body 2, thereby forming a seal, and sealing rubber corresponding to the jacking pipe is provided on the retaining ring 11 and the turntable, so as to prevent soil, slurry, etc. from entering the main body 2.

[0034] In an optional embodiment, the turntable is an annular metal ring, whose outer diameter is matched with the outer diameter of the main body 2 and whose width is greater than the wall thickness of the top tube. A rotating part is provided between the turntable and the end face of the main body 2. The rotating part is a thrust bearing 24. A rear shell 21 corresponding to the thrust bearing 24 is provided at the rear end of the main body 2. The rear shell 21 is annular to serve as the rear end face of the main body 2. The thrust bearing 24 can ensure a rotating connection between the main body 2 and the turntable. A sealing ring corresponding to the end face of the main body 2 is provided on the edge of the turntable to form a rotating sealed connection with the main body 2.

[0035] In an optional embodiment, the part of the turntable extending inward from the inner side of the thrust bearing 24 is provided with a ratchet ring 41, the ratchet ring 41 is concentrically distributed with the main body 2, and a plurality of continuous ratchets distributed in the same direction are provided on the ratchet ring 41. A wedge extending toward the ratchet ring 41 is provided on the main body 2. When the end face of the wedge matches the shape of the ratchet, after the wedge is embedded in the gear on the ratchet ring 41, the ratchet ring 41 can only move in one direction, thereby preventing the relay from retracting during the jacking process. Thus, a reliable locking mechanism is formed, thereby ensuring the stability and safety of the device in the working state or in a specific position, and preventing unexpected movement or displacement.

[0036] In an optional embodiment, the ratchet passes through the end face of the main body 2 through a guide column 45, and the guide column 45 is a metal column. An adjusting nut 44 is connected to the end of the guide column 45 extending into the main body 2. A return spring 43 is provided between the end face of the main body 2 and the wedge block. The return spring 43 maintains the movement tendency of the wedge block to embed into the ratchet, and the return spring 43 can be contracted to make way for the ratchet during normal rotation. The elastic force can be adjusted by adjusting the adjusting nut 44.

[0037] When the sleeve 1 is pushed to a specific position, the threaded vertical screw rod can be driven to retract through the guide column 45, so that the wedge block 42 can be retracted, thereby realizing the retraction of the main body 2. Furthermore, in order to improve the limiting ability, a driving rod corresponding to the guide column 45 is provided on the inner wall of the main body 2. The driving rod can be a hydraulic cylinder or a pneumatic cylinder, which is connected to the guide column 45 through a rope, so as to drive the wedge block to unlock. The driving rod solenoid valve is correspondingly connected to the controller to improve the automatic control ability.

[0038] There can be multiple wedge blocks, which are driven by pairs of guide pillars 45 and are evenly distributed in the circumferential direction of the turntable.

[0039] Since the wedge block and the guide column 45 have a certain length, in order to improve the compactness of the assembly, a stepped hole corresponding to the guide column 45 is provided on the main body 2. Generally speaking, the end of the main body 2 has a certain thickness, so the stepped hole is provided to accommodate and make way for the guide column 45. The reset spring 43 is assembled in the stepped hole, and the reset spring 43 is in contact between the stepped surface and the wedge block. Further, in order to ensure compactness, the wedge block main body 2 is a metal polygonal column, and a corresponding inclined surface is provided at one end corresponding to the ratchet tooth. The stepped hole is a polygonal hole adapted to the wedge block main body 2, thereby reducing the space occupied, improving the shear resistance of the wedge block, and ensuring stability in the locked state.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A spiral jacking device for intermediate room of jacking pipe construction, characterized in that: include: A main body, one end of which abuts against a previously constructed jacking pipe through a sleeve, and the other end of which abuts against a currently constructed jacking pipe through a turntable, and the sleeve is threadedly assembled with an outer wall of the main body through an internal thread; A driving mechanism, wherein a retaining ring corresponding to the end face of the jacking pipe is provided at the end of the sleeve, and a plurality of driving mechanisms are evenly distributed along the circumferential direction on one side of the retaining ring corresponding to the main body. After the driving mechanism extends into the main body, it is correspondingly assembled on the inner wall of the main body to generate a circumferential driving force with the main body, so that the sleeve rotates circumferentially about the main body and drives the jacking pipe in the axial direction.

2. The spiral pipe jacking construction relay room jacking device according to claim 1 is characterized in that: The driving mechanism includes a driving motor, a transmission rod and a driving gear. The driving motor is fixed on the retaining ring, and its main shaft extends in a direction parallel to the axis of the main body and is connected to the driving gear through the transmission rod. A gear sleeve is provided inside the main body and engages with the driving gear through internal teeth.

3. The spiral pipe jacking construction relay room jacking device according to claim 1 is characterized in that: The main body corresponds to one threaded end of the sleeve, and a step with an increased outer diameter is used as a transition between the threaded end and the other end. A buffer strip corresponding to the step is provided at the end of the sleeve.

4. The spiral pipe jacking construction relay room jacking device according to claim 1 is characterized in that: A rotating member is provided between the rotating disk and the end surface of the main body, and the rotating member is a thrust bearing.

5. The spiral pipe jacking construction relay room jacking device according to claim 1 is characterized in that: The rotating disk is provided with a ratchet ring, the ratchet ring is distributed concentrically with the main body, and the main body is provided with a wedge block extending toward the ratchet ring.

6. The spiral pipe jacking construction relay room jacking device according to claim 5 is characterized in that: The ratchet passes through the end surface of the main body through a guide column, one end of the guide column extending into the main body is correspondingly connected to the adjusting nut, and a reset spring is arranged between the end surface of the main body and the wedge block.

7. The spiral pipe jacking construction relay room jacking device according to claim 6 is characterized in that: The main body is provided with a stepped hole corresponding to the guide column, and the return spring is assembled in the stepped hole.

8. The spiral pipe jacking construction relay room jacking device according to claim 2 is characterized in that: The driving motor is provided with a motor support arm corresponding to the retaining ring, and the motor support arm is fastened and installed on the retaining ring by rivets.

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